Kings Square Project (CCF Earth Awards Winner 2014)

Mobile Dewatering

Project Owner: DEXUS Property Group & HBF

Client: Broad Constructions, ProBuild & John Holland Group

Project Value: $ $360 million

The Kings Square project, situated in the middle of Perth City Link, was a West Australian Government project. Combining the works of head contractors John Holland Group, Broad Constructions and Broad Civil, Mobile Dewatering was appointed the project’s preferred dewatering contractor. 

For the dewatering on the project to be successful Mobile Dewatering needed to design a system that allowed for the various environmental reporting requirements and licencing restrictions that each developer had been contracted to deliver. 

With extensive knowledge and experience held by both teams it was a WA Government directive that Mobile Dewatering be appointed dewatering provider for the precinct development, and that Mobile Dewatering Environmental Division was the nominated environmental consultant.

The scope of works included designing and delivering all dewatering works onsite as well as treatment and disposal of water in accordance with a dewatering management plan and legislative requirements. 

The project saw drilling of recharge wells and bore holes fitted with slotted liners and electric submersible pumps. This system dewatered up to 15 litres of water a second. Extracted water was treated via metal-removal modules and reinjection systems. 

The project was closely monitored and managed by a team of fulltime dewatering staff and a 24-hour alarmed monitoring system with after-hours service.

The Department of Environment and Conservation (DEC) were regular visitors to this site throughout the life of the project. Results achieved by the Mobile Dewatering Group demonstrated to the DEC and Swan River Trust that higher quality levels for extracted water should be expected as a minimum from all dewatering contractors in future projects

The Mobile Dewatering Group won the 2014 Earth Awards for works completed on the Kings Square Project.